long oneYearWithL = 1000*60*60*24*365L; long oneYearWithoutL = 1000*60*60*24*365; Your first value is actually a long (Since 365L is a long, and 1000*60*60*24 is an integer, so the result of multiplying a long value with an integer value is a long value. But 2nd value is an integer (Since you are mulitplying an integer value with … Read more
Credits to http://moeffju.net/blog/using-bigint-columns-in-rails-migrations class CreateDemo < ActiveRecord::Migration def self.up create_table :demo, :id => false do |t| t.integer :id, :limit => 8 end end end See the option :id => false which disables the automatic creation of the id field The t.integer :id, :limit => 8 line will produce a 64 bit integer field
You are missing the fact that Long.getLong(String str) is not supposed to parse a String to a long, but rather to return a long value of a system property represented by that string. As others have suggested, what you actually need is Long.parseLong(String str).
What you need is word-wrap: break-word;, this property will force the non spaced string to break inside the div Demo div { width: 20px; word-wrap: break-word; }
You can use below line of code to do this. Here timeInMilliSecond is long value. String dateString = new SimpleDateFormat(“MM/dd/yyyy”).format(new Date(TimeinMilliSeccond)); Or you can use below code too also. String longV = “1343805819061”; long millisecond = Long.parseLong(longV); // or you already have long value of date, use this instead of milliseconds variable. String dateString = … Read more
I consider having Long is better, as it is more correct to check whether an entity has persistent identity by checking against the null value (in MySQL you can have an ID of value 0). Also some libraries like Spring base(d) on an ID of type Long (by default) in their logic. See this implementation … Read more
Use the .toInt method on Long, i.e. seconds.toInt
Not with built-in JSON.parse. You’ll need to parse it manually and treat values as string (if you want to do arithmetics with them there is bignumber.js) You can use Douglas Crockford JSON.js library as a base for your parser. EDIT2 ( 7 years after original answer ) – it might soon be possible to solve … Read more
There are multiple ways to do it: Use a ByteBuffer (best option – concise and easy to read): byte[] bytes = ByteBuffer.allocate(Long.SIZE / Byte.SIZE).putLong(someLong).array(); You can also use DataOutputStream (more verbose): ByteArrayOutputStream baos = new ByteArrayOutputStream(); DataOutputStream dos = new DataOutputStream(baos); dos.writeLong(someLong); dos.close(); byte[] longBytes = baos.toByteArray(); Finally, you can do this manually (taken from … Read more
C++ uses the limits defined in the C standard (C++: 18.3.2 (c.limits), C: 5.2.4.2.1): LONG_MIN -2147483647 // -(2^31 – 1) LONG_MAX +2147483647 // 2^31 – 1 So you are guaranteed that a long is at least 32 bits. And if you want to follow the long circuitous route to whether LONG_MIN/LONG_MAX are representable by a … Read more